Ichthyostega
26374ce409
compiles ok, singleton test pass (most of asset creation just commented out...)
93 lines
2.1 KiB
C++
93 lines
2.1 KiB
C++
/*
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DB.hpp - registry holding known Asset instances.
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Copyright (C) CinelerraCV
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2007, Christian Thaeter <ct@pipapo.org>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef ASSET_DB_H
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#define ASSET_DB_H
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#include "proc/asset.hpp"
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#include <tr1/unordered_map>
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#include <boost/utility.hpp>
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namespace asset
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{
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/* ===== hash implementations ===== */
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size_t
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hash_value (const Asset::Ident& idi)
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{
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size_t hash = 0;
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boost::hash_combine(hash, idi.org);
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boost::hash_combine(hash, idi.name);
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boost::hash_combine(hash, idi.category);
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return hash;
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}
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size_t
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hash_value (const Asset& asset)
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{
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return asset.getID();
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}
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/**
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* trivial hash functor.
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* returns any hash value unmodified.
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* For building a hashtable with keys
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* already containing valid hash values.
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*/
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struct IdentityHash
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: public std::unary_function<size_t, size_t>
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{
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size_t
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operator() (size_t val) const { return val; }
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};
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typedef std::tr1::unordered_map<size_t, PAsset, IdentityHash> IdHashtable;
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/**
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* Implementation of the registry holding all Asset
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* instances known to the Asset Manager subsystem.
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* As of 8/2007 implemented by a hashtable.
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*/
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class DB : private boost::noncopyable
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{
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IdHashtable table;
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friend class AssetManager;
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DB () : table() {}
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~DB () {}
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};
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} // namespace asset
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#endif
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